curl --request POST \
  --url https://api.tilta.io/v1/invoices/calculate_fees \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "amount": 123,
  "due_at": 1582896122,
  "buyer_external_id": "<string>",
  "paid_out_at": 1582896122,
  "merchant_external_id": "<string>"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: 'Bearer <token>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    amount: 123,
    due_at: 1582896122,
    buyer_external_id: '<string>',
    paid_out_at: 1582896122,
    merchant_external_id: '<string>'
  })
};

fetch('https://api.tilta.io/v1/invoices/calculate_fees', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.tilta.io/v1/invoices/calculate_fees"

payload = {
    "amount": 123,
    "due_at": 1582896122,
    "buyer_external_id": "<string>",
    "paid_out_at": 1582896122,
    "merchant_external_id": "<string>"
}
headers = {
    "Authorization": "Bearer <token>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.tilta.io/v1/invoices/calculate_fees",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => json_encode([
    'amount' => 123,
    'due_at' => 1582896122,
    'buyer_external_id' => '<string>',
    'paid_out_at' => 1582896122,
    'merchant_external_id' => '<string>'
  ]),
  CURLOPT_HTTPHEADER => [
    "Authorization: Bearer <token>",
    "Content-Type: application/json"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

{
  "fees": {
    "financing": {
      "merchant_fee": {
        "base_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "daily_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "total_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "tax_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "amount": {
          "net": {
            "value": 123,
            "min": 123,
            "max": 123
          },
          "tax": {
            "value": 123,
            "min": 123,
            "max": 123
          },
          "gross": {
            "value": 123,
            "min": 123,
            "max": 123
          }
        }
      }
    },
    "insurance": {
      "merchant_fee": {
        "base_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "daily_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "total_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "tax_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "amount": {
          "net": {
            "value": 123,
            "min": 123,
            "max": 123
          },
          "tax": {
            "value": 123,
            "min": 123,
            "max": 123
          },
          "gross": {
            "value": 123,
            "min": 123,
            "max": 123
          }
        }
      }
    },
    "collection": {
      "merchant_fee": {
        "base_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "daily_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "total_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "tax_rate": {
          "value": 123,
          "min": 123,
          "max": 123
        },
        "amount": {
          "net": {
            "value": 123,
            "min": 123,
            "max": 123
          },
          "tax": {
            "value": 123,
            "min": 123,
            "max": 123
          },
          "gross": {
            "value": 123,
            "min": 123,
            "max": 123
          }
        }
      }
    }
  },
  "amount": 123,
  "due_at": 1582896122,
  "buyer_external_id": "<string>",
  "merchant_external_id": "<string>",
  "paid_out_at": 1582896122
}

{
  "code": "BAD_REQUEST",
  "error": "Request validation failed. 1 issue found.",
  "issues": [
    {
      "code": "INVALID_TYPE",
      "path": "body.registered_at",
      "message": "Invalid type"
    }
  ]
}

{
  "error": "Unauthorized",
  "code": "UNAUTHORIZED"
}